How often should Development Team membership change?

How often should Development Team membership change?
A . As needed, while taking into account a short term reduction in productivity.
B . Never, because it reduces productivity.
C . As needed, with no special allowance for changes in productivity.
D . Every Sprint to promote shared learning.

Answer: A

Explanation:

The correct answer is A, because Development Team membership should change as needed, while taking into account a short term reduction in productivity. The Scrum Guide states that “development Teams are cross-functional, with all of the skills as a team necessary to create a product Increment; development Teams are self-organizing. No one (not even the Scrum Master) tells the Development Team how to turn Product Backlog into Increments of potentially releasable functionality.” Therefore, changing Development Team membership may affect their cross-functionality and self-organization in the short term.